Apterocyclus honoluluensis Waterhouse, 1871
.....Apterocyclus honoluluensis Waterhouse, 1871: 315. (orig. comb.)
..........Apterocyclus varians Sharp in Sharp & Scott, 1908: 404. (synonym)
..........Apterocyclus deceptor Sharp in Sharp & Scott, 1908: 405. (synonym)
..........Apterocyclus feminalis Sharp in Sharp & Scott, 1908: 405. (synonym)

Distribution: USA: Hawai'i: Kauai I.

Abbott, J.C. & D. Petr. 1997. Rediscovery of Apterocyclus honoluluensis Waterhouse on Kauai (Coleoptera: Lucanidae). Bishop Museum Occasional Papers. 49(2):71.[not actually A. honoluluensis].

Taxonomy:

Paulsen, M.J. and D.C. Hawks. 2014. A review of the primary types of the Hawaiian stag beetle genus Apterocyclus Waterhouse (Coleoptera, Lucanidae, Lucaninae), with the description of a new species. ZooKeys 433: 77–88. doi: 10.3897/zookeys.433.8022

Sharp, D. and H. Scott 1908. Coleoptera In: (D. Sharp, ed.) Fauna Hawaiiensis or the Zoology of the Sandwich (Hawaiian) Isles. Volume 3 (5): 367-579, plates XIII - XVI.

Van Dyke, E.C. 1922. A study of the lucanid Coleoptera of the Hawaiian Islands. Proceedings of the Hawaiian Entomological Society 5(1): 39-49.

Waterhouse, C.O. 1871. On a new genus and species of Coleoptera belonging to the family Lucanidae, from the Sandwich Islands. Transactions of the Entomological Society of London 1871(2): 315-316.

Remarks:

This species is likely in considerable peril due to non-native rodents, and its conservation and current distribution should be assessed. The larvae live in the soil and feed on decomposing logs of the tree Acacia koa A. Gray (Fabaceae).